Thank you,
I was asked if I could recompile with cuda 9.1 and I did try but I saw that the some of the performance gains that I had with my mods got lost and the end results wasn't justifying the added fee so there is no benefit for the miners to use it, so it's only cuda9.2.
Regarding 64bit vs 32bit, I know that before cuda 9 the 32bit had better performance but since then 64bit is better or equal, if there is a demand for it I can try to compile 32 bit and test it if the speed is same.
Thank you for the prompt reply. Based on what I have read about Cuda 9.2, there are some optimizations not found in 9.1, so it is understandable that it may not run as fast with the earlier SDK. Unfortunately it is a bit late in my own development cycle to upgrade my device drivers to support 9.2, but after my next release I will do so to test integrating your software into Hash Auger.
Regarding 64-bit vs 32-bit, I am not sure if Lyra2z benefits from the extra CPU precision that the 64-bit code provides. If not, the smaller memory footprint and file size of a 32-bit version may benefit those users with limited RAM.